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Weighted integration of short term memory and sensory signals in the oculomotor system

View ORCID ProfileNicolas Deravet, Gunnar Blohm, View ORCID ProfileJean-Jacques Orban de Xivry, Philippe Lefèvre
doi: https://doi.org/10.1101/151381
Nicolas Deravet
1 Institute of Information and Communication Technologies, Electronics, and Applied Mathematics and Institute of Neuroscience, Université catholique de Louvain, B-1348 Louvain-La-Neuve, Belgium.
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Gunnar Blohm
2 Centre for Neuroscience Studies, Queen’s University, Kingston, ON, Canada.
3 Canadian Action and Perception Network (CAPnet).
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Jean-Jacques Orban de Xivry
4 Department of Kinesiology, Movement Control and Neuroplasticity Research Group, Katholieke Universiteit Leuven, Leuven, Belgium
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Philippe Lefèvre
1 Institute of Information and Communication Technologies, Electronics, and Applied Mathematics and Institute of Neuroscience, Université catholique de Louvain, B-1348 Louvain-La-Neuve, Belgium.
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Abstract

Oculomotor behaviors integrate sensory and prior information to overcome sensory-motor delays and noise. After much debate about this process, reliability-based integration has recently been proposed and several models of smooth pursuit now include recurrent Bayesian integration or Kalman filtering. However, there is a lack of behavioral evidence supporting these theoretical predictions.

Here, we independently manipulated the reliability of visual and prior information in a smooth pursuit task. Our results show that both smooth pursuit eye velocity and catch-up saccade amplitude were modulated by visual and prior information reliability.

We interpret these findings as the continuous reliability-based integration of a short-term memory of target motion with visual information, which support modelling work. Furthermore, we suggest that saccadic and pursuit systems share this short-term memory. We propose that this short-term memory of target motion is quickly built and continuously updated, and constitutes a general building-block present in all sensorimotor systems.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted June 19, 2017.
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Weighted integration of short term memory and sensory signals in the oculomotor system
Nicolas Deravet, Gunnar Blohm, Jean-Jacques Orban de Xivry, Philippe Lefèvre
bioRxiv 151381; doi: https://doi.org/10.1101/151381
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Weighted integration of short term memory and sensory signals in the oculomotor system
Nicolas Deravet, Gunnar Blohm, Jean-Jacques Orban de Xivry, Philippe Lefèvre
bioRxiv 151381; doi: https://doi.org/10.1101/151381

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